Hose jack



L. J. Kick 2,098,548

HOSE JACK Nov. 9, 1937.

Filed Apri; 15, 1955 t `L Y Y ATTORNEY Patented Nov. 9, 1937 UNITEDSTATES PATENT OFFICE nosE JACK Louis J. Kick, Union city, Ng-J-Application April 15, 1936, Serial No. 74,463

3 Claims.

My invention relates to improvements in hose jacks.

One of the objects of my invention is to provide an improvedconstruction fora hose jack which can bev applied quickly to a iirehose, for example, and operated with comparatively little eiort and byone man to completely stop the ow of water at very high pressureswithout necessitating shutting oii the' water at the pump. 1U Anotherobject of my invention is to provide an improved hose jack of thecharacter referred to which is relatively simple and rugged' inconstruction, and which has provisions for releasing the hose eithergradually or quickly, as might be desired, so that the water under thehigh pressure again starts to flow under complete control ofthe singleoperator.

Another'object of my invention is to provide an improved hose jack' ofthe character referred towhich is safe in every respect for useparticularly in handling fire hose under any conditions which mightarise, and which is relatively light and easily carried from one placeto another and used without.- dii'culty.

Other objects and advantagesv will hereinafter appear.

For` the purpose of illustrating my invention, an embodiment thereof isshown in the drawing, wherein Figure 1 is a side elevational view,partly in section, of a hose jack constructed and operating inaccordance with my invention, the section being taken on the line I-I inFig. 2;

Fig. 2 is a sectional view, the section being taken on the line 2-2 inFig. 1; and

Fig. 3 is a fragmentary View, partly in section, showing a modiiication-With reference to Figs. 1 and 2, my improved hose jack comprises afour-sided frame I comprising the opposite side members I2 iixed asrepresented to an end member I4, and a bar or bolt I6 inserted throughregistering openings I8 in the side members I2 to constitute the otherend member of the frame.

A hydraulic jack unit, represented generally by the reference numeral20, is disposed within the frame I0 and is supported on a base 22 whichis guided by the side members I2 of the frame, for which purpose thebase is provided with openings through which the members I2 pass with afree, sliding lit.

The hydraulic jack unit is of a conventional design, and in the presentdisclosure of an embodiment of my invention is shown as being of 55 thespecic type used for hydraulic automobile jacks and known in the' tradeas` Hy-Jacki and" manufactured by the Ero Manufacturing Com pany ofChicago, Illinois and Philadelphia, Penn` Sylvania.

Since the details of constructionand prin- 5' ciple or manner ofoperation of the hydraulicy jack unit 20 are well known to those skilledin the art, it is not believed to be necessary to discussi these indetail. For the present purpose, however, it can be said that the unit20 comprises 10 a cylinder member 24 fixed to the base 2-2., and`- aplunger member 26 within the cylinder member; An auxiliary cylinder 28and an associated plunger' 30, and a lever 32, all disposed andassociatedwith respect to each other as shown, constitute: means I5 forpumping oil or other liquid into the cylinder' 24 between the respectiveadjacent ends of thev latter and the plunger 26. This forces the mem-rbers 24 and 26 apart to compress the hosel-be-f tween the end I6 of theframe andthe base 22; 2G-

In this way, the flow of Water through thehoseis`` entirely stopped, sothat one nozzle might be substituted for another, or avr section ofhoseV removed or inserted without necessitating shut ting oi the waterat the pump'.

Hydraulic jack units of the general typel disclosed arev provided withvalve means-designated generally by the reference nu'rrieral3li,y forrelieve ing the pressure of the oil or other liquid to permit movementof the cylinder and plunger-mem- 30 bers 24 and 26 together. Inoperation, therefore, the operator can open the valve 36 gradually sothat after the new connection or change has been made in the hose line,ilow of water "at the high pressure through the line can be restored 35entirely under his control, and gradually.

It is proposed to provide tension springs 38, each connected at one endto the end member I4 and at its other end to the base 22, for thepurpose of pulling the cylinder 24 and the base 22 40 upwardly to thefull-line position shown when the valve 36 is opened to relieve thepressure.

In the modification shown in Fig. 3, instead of using the tensionsprings 38 for the purpose explained, compression springs 38a aredisposed 45 on the side members I2 of the frame. In this construction,each of the springs 38a is enclosed and protected by a casing 40 fixedat its lower end to the base 22 and provided at its upper end with aninwardly extending ilange 42. 50

'Ihe springs 38a are compressed between the iianges 42 and collars 44fixed on the frame members I2. During operation to compress a hose,therefore, the springs 38a are compressed, and operate when the valve 36is opened to restore the 55 parts to their respective positions as shownin Fig. 1.

The jack can be placed quickly over a hose line at any point desired,and the bolt I6 put in place to complete the frame. With the valve 36closed, and upon manipulation of the lever 32, the parts then functionto compress the hose and completely stop the flow of water.

When not in use, the bolt I6 might be inserted into the hollow lever 32,as shown in dash-line, and heldl therein bymeans of a set screw 46.

It is proposed to secure the bolt I6 to the jack by a chain 48 so thatit will not be lost.

From the foregoing it will be seen that I have provided an improvedconstruction for a hose` jack which is reliable and relatively simple inconstruction and manner of operation,` and by which fire hoseparticularly can'be quickly compressed to completely shut off the flowvof water at high pressures without shutting off the water or reducingthe pressure at the pump. Furthermore, it` will be seen that my improvedjack can be operated easily by one man, and transported readily from oneplace to another and used under conditions which ordinarily would makeit impossible to make a change of nozzles or break the line to insert orremove a hose section without shutting off the water at the pump.

It will be understood that various modifications such as4 in the size,shape and arrangement of theparts might be made without departing fromthe spirit ofmy invention or the scope of the claims.

I `claim as my invention: Y

1. A hose jack comprising a four-sided frame, a hydraulic jack unitdisposed within said frame and comprising a base and a cylinder fixedthereto and a plunger withinisaid cylinder, said base engaging and beingguided by the opposite side members offsaid frame, said plunger `beingfixed with respect to an end of said frame, means associatedand moveablewith said cylinder for pumping liquid into the cylinder between therespective adjacent ends of the latter and the plunger where- 45 by saidcylinder is forced away from said end of said frame to compress the hosebetween the other end of said frame and said base, valve meansassociated and moveable with said cylinder for 2,098,548 if fz relievingthe liquid pressure to permit movement of said cylinder and plungertogether to release the hose, and tension spring means secured at oneend thereof to said frame and at the other end thereof to said unit andoperating to urge said cylinder toward said plunger.

2. A hose jack comprising a four-sided frame, a hydraulic jack unitdisposed within said frame and comprising a base and a cylinder fixedthereto and a plunger within said cylinder, `said base engaging andbeing guided by the opposite side members of said frame, Ysaid plungerbeing xed with respect to an end of said frame, means for pumping liquidinto the cylinder between the respective adjacent ends of the latter andthe plunger 4whereby said cylinder is forced away from said end of saidframe to compress the hose between the other fend of said frame and saidbase, valve. means for relieving the liquid pressure to permit movementof said cylinder and plunger together to release the hose, and twotension springs disposed respectively on opposite sides of said cylinderand each fixed at one end thereof to said frame end and each fixed atits other end to said base thus-operating to urge saidcylinder towardsaid plunger.V

3. A hose jack comprising a four-sided frame, a hydraulic jack unitdisposed within said frame comprising a base slidably guided by theside` mem` bers of the frame, a cylinder member carried by -said base,,a plunger member within said cylinder means for relieving the liquidpressure to permitV movementof said `members together to release thehose, and tension springs located on opposite sides of the cylinder soconnected tothe base andthe frame as to urge said members toward eachother.

LOUIS J. KICK;1

